Shimano BB UN300 bottom bracket British thread, 68 110 mm for chaincase, Silver

Sealed bearing construction helps protect the interface from dirt, moisture and daily riding stress Eje Pedalier BSA 110mm/68mm compatibility simplifies service work when replacing worn units or refreshing a drivetrain setup Low friction rotation improves pedalling feel, helping riders maintain cadence across longer or harder rides Workshop friendly dimensions support accurate installation, reducing creaks and preserving crank alignment 110mm / 68mm / BB-UN300 bottom bracket standard supports smooth crank rotation, stable bearing support and efficient power transfer